Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7999780 | Journal of Alloys and Compounds | 2015 | 6 Pages |
Abstract
NiAlDy coatings doped with 0.05 at.% and 1.00 at.% B were produced by electron beam physical vapour deposition (EB-PVD). The mechanical properties and cyclic oxidation behaviour of the coatings were investigated. Compared to the undoped NiAlDy coating, the B doped coatings exhibited improved ductility, higher micro-hardness and elastic modulus. The NiAlDy alloys revealed similar thermal expansion behaviour in a temperature range of 200-1100 °C. However, the addition of B did not show significant improvement in the cyclic oxidation resistance of NiAlDy coatings, on the contrary, the addition of 1.00 at.% B accelerated the scale growth rate and aggravated the scale rumpling, which led to severe spallation. Related mechanisms were preliminarily discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Fang Jia, Hui Peng, Lei Zheng, Hongbo Guo, Shengkai Gong, Huibin Xu,